Closed Thread
Results 1 to 7 of 7

Reload Thread: High SQ Sealed

  1. #1
    Eugenics's Avatar
    Eugenics is offline Princess



    Join Date
    Jul 2005
    Location
    Arbys
    Posts
    23,904
    Post Thanks / Like
    Mentioned
    0 Post(s)

    High SQ Sealed

    I searched around and never really found what i was looking for

    i was wondering what sets one sealed enclosure apart from the other. im going with the recomended specs but was wondering what i could do to the box to set it above the bar so to speak. is there any ideal shape? ideal place to mount the sub? ideal material? anything i should put inside the box? etc?

    any help would be great.



    crunktimes . com/ct




  2. #2
    JimJ's Avatar
    JimJ is offline Tangled Up in Blue



    Join Date
    Jun 2004
    Location
    Hillsborough, NC
    Posts
    31,681
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: High SQ Sealed

    No ideal shape...as long as the volume is correct, it could be any shape. Technically, a sphere is the best due to the reduction of standing waves (conversely, a cube would be the worst for standing waves) but in practice this isn't something to worry about a lot.

    Ideal material is MDF or heavily-braced plywood.

    The alignment is going to make much more of a sonic different...playing around with high and low Q alignments will give you a very good idea of how the enclosure interacts with the vehicle's airspace.




  3. #3
    Eugenics's Avatar
    Eugenics is offline Princess

    Threadstarter


    Join Date
    Jul 2005
    Location
    Arbys
    Posts
    23,904
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: High SQ Sealed

    can you explain the higher and lower q thing?

    i drive a beetle and was thinking about aiming my sub at the back window, would that help?



    crunktimes . com/ct

  4. #4
    JimJ's Avatar
    JimJ is offline Tangled Up in Blue



    Join Date
    Jun 2004
    Location
    Hillsborough, NC
    Posts
    31,681
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: High SQ Sealed

    I know myself and Squeak have described it here before, but...

    A Qtc of .707 is generally considered a "middle" alignment. Higher values will usually have less transient response, better power handling, and better high frequency response. Lower alignments will have better transient response, lower power handling ability, better low frequency response at the loss of upper frequencies. The extreme of this would be an infinite baffle setup, which is extremely low Q.

    Playing around with frequency response charts on WinISD and others will make this instantly clear.
    Last edited by JimJ; 07-31-2005 at 04:34 PM. Reason: sneeky snake




  5. #5
    Eugenics's Avatar
    Eugenics is offline Princess

    Threadstarter


    Join Date
    Jul 2005
    Location
    Arbys
    Posts
    23,904
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: High SQ Sealed

    i just dont get the whole Qts thing (what it is) and all that... because im dense and whatnot



    crunktimes . com/ct

  6. #6
    Eugenics's Avatar
    Eugenics is offline Princess

    Threadstarter


    Join Date
    Jul 2005
    Location
    Arbys
    Posts
    23,904
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: High SQ Sealed

    alright, i figured it out, got winisd made myself a nice little graph and still dont know what the **** im doing



    crunktimes . com/ct

  7. #7
    Raven's Avatar
    Raven is offline Lacking social skills!



    Join Date
    Dec 2004
    Location
    Michigan
    Age
    29
    Posts
    4,618
    Post Thanks / Like
    Images
    1
    Mentioned
    0 Post(s)

    Re: High SQ Sealed

    In a nutshell
    Small sealed boxed will be peaky. They "punch" so to speak, but have a poor bottom end.
    Large sealed boxes won't be peaky. They won't "punch" but will play lower.




Closed Thread

Similar Threads

  1. Confusion on Ported or Sealed for SQ
    By Rattlebrain in forum General Discussion
    Replies: 11
    Last Post: 06-26-2005, 10:59 PM
  2. question about spl and SQ versus port or sealed
    By luke32303 in forum Subwoofers
    Replies: 40
    Last Post: 09-01-2004, 06:37 PM
  3. Sound Quality: The Sealed/Ported misconception
    By Below 30 in forum General Discussion
    Replies: 230
    Last Post: 02-28-2004, 05:15 PM
  4. HIgh power sq?
    By Grape_Ape in forum Subwoofers
    Replies: 5
    Last Post: 08-27-2002, 11:11 AM

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum